Worcester 28CDI Wartungshandbuch PDF herunterladen (Seite 38)

38

Light indication

during fault not

covered by above

details.

Control board is likely

to be wet or damaged

or malfunctioning.

Check for wet board or

connections. Dry and

re-use or replace

control board. (Section

16.4.13).

FAIL POINT K

Hot water

temperature always

too hot during a

demand (not

regulating).

Hot water sensor

could be off or poorly

fixed to pipe.

Repair or replace

sensor.

(Section 16.4.14).

Water temperature

very low/low gas

pressure (with all

knobs set to

maximum)?

Remove multiway

connector from board

position ST16. Is the

resistance across

contacts 1 and 2

(blue wires) below

60 ohms.

Remove blue (top)

connector from gas

valve.

Is there continuity

along blue wires to

multiway connector?

Is the gas set to correct

pressure?

Set pressure.

No

No

Repair wires or replace

harness.

No

Yes

Yes

Replace gas valve.

(Section 16.4.11).

Replace control board.

(Section 16.4.23).

Yes

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